{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["engineering feature", "enabling technology", "machanical property", "application", "concept or principle"], "input": "Microhardness of each zone is determined by the local microstructure ."}
{"engineering feature": [], "enabling technology": [], "machanical property": [], "application": [], "concept or principle": ["Microhardness", "microstructure"]}